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@nimh tetes' gatwt @ffice MOSES W. KIDDER AN D MOSES W. SHOREY, OF LOWELL, MASSAOHUSETTQ.- Latem Param No. 64,330, dared April so, 186i.

IMPROVED REFRIGERTOR.

TO' ALL WHOM IT MAY CONCERN:

Be it known that we, l Mt-)SES W'. KIDDBP. and MOSES lV. SHOREY, both of Lowell, in the county of Middlesex, and State of Massachusetts, have invented certain new and useful improvements in Refrigerators, of which the following is a full, clear, and exact description, reference being had`to the accompanying drawings, makingpart of this specification, in which-L Figure l is a longitudinal vertical section.

Figure 2,'a transverse section on. the line A B of tig. 1

Figure 3 is a similar section when the inner doors areclosed.

Figurefl is a horizontal plane section on the line y z of fig. 1. g

This invention consists, first, in a peculiar arrangement of tubes or passages for ventilation, whereby all the air which enters the refrigerator passes through tubes or pipes which are surrounded by the cold air, which passes out, and by such cold air is considerably cooled before it reaches the interior compartments; second, our invention consists in the employment of a non-conducting substance or material for the sidesa of the inner passage E, to prevent the air which passes in through said passage ai'ecting the temperature within the compartments; third, our invention consists in the use and application of a valve, Z, to the back of either or all' of the compartments, or to either side thereof, and so arranged that opening either of the inner doors d allows the valve therewith connected to close and prevent c'old air from other compartments escaping through the opened one, or external air entering through the same; and when all the inner doors are closed the Valves connected are opened to admit a free circulation ofthe cold air within into all the compartments.

Onetend of an operating-rody is attached to the valve and the othcr end.-.pr0j0cts beyondV thc Vertical partition A, to be acted upon by the door d to open the valve when the door lis closed. A spring, e, closes the valve b when the door d is opened. All the compartments may have valves springs e, and rods c connected therewith, to be acted upon by the doors d, so that when the door of any one compartment is opened, and the valveof such compartment is closed, the coid air contained in .the other compartments cannot pass out through the opened one, nor can warm or external air enter through the opened compartment. Valvesf are arranged on the rod c to cover the holes y, made through the vertical partition A, when the compartment door is opened.

The tubes, pipes, or passages B are for the admission of air, which passes in at the opening C, made through the end D of the refrigerator. The inward current of air passes down the passage B, thence inward, and then upward through the passage E, and through the opening F, into the upper part of the ice-box Gr, where it is cooled, and from which ice-box the .cold air passes through a large opening, H, made through the vertical partition A, and through smaller .openings 'n into all the other compartments. The cold air passes outthrough the openings L, into and upward through the spaces or passages I, around the tubes B, and'out at the openings lc near the ingress opening C. The outward current of `cold air comingin contact with the external surfaces of the tubes B has'a tendency to cool the-airl passing in through -the latter tubes, so that the air which enters the refrigerator is rendered much cooler by the cold air which passes out, thus keeping the interior of the refrigerator at a much lower temperature, and causing the icc to endure muc-h longer, or a smaller quantity of ice to A answer vthe desired purpose. The pipes m are designed for the removal of the condensed vapor of the airentering through the tube B and condensed by the cold air surrounding the same.- And we contemplate enlarging the induction tube 'B and contracting the size ofthe 4eduction tube or passa-ge I so as to allor.' the induction tube to surround thecduction tube, and thereby produce the same result of cooling the air which passes into the refrigeratoz` by the cold air which passes out, by surrounding the onward current of cold air by the inward eurrent of warmer air, instead of the reverse, as shown and described. i

1. We claim, first, the arrangement ofthe induction tube B within the eduction tube or passage I, in the manner and for the purpose set forth.

2. The use and application of valves b and f to the back or either side of cach or any of the compartments, said valves being operated by opening and closingv the inner doors, substantially as and for thc purpose explained.

3. The combination of the tubes, pipes, or passages arranged for ventilation, as set forth, the valves b and and rods c, with the refrigerator, the whole arranged to operate substantially as and for the purpose set forth.

MOSESl W. KIDDER, MOSES W. SHOREY.

Witnesses H. A. FIELDING, Bans. K. Manssen. 

